Here we have reviewed and discussed how simple spherical model swimmers – squirmers – can be modeled and simulated using the method of multiparticle collision dynamics. We have shown how the dynamics of the fluid and the squirmers is coupled both in the streaming step and in the collision step, where a correct momentum and angular momentum transfer between particles ensures correct hydrodynamics [1]} and thermal fluctuations [2]}.
In order to enhance the accuracy of the flow fields around the
squirmer,
the use of virtual particles inside squirmers, which contribute to the collision step, is necessary.
Also bounding surfaces and pressure-driven flows can be simulated straightforward.
Since the method models the fluid explicitely via effective fluid particles, thermal noise is included naturally in the simulation.
In order to obtain smooth flow fields averaging over several realisations and over time is necessary.
